diff --git a/src/modules/LR11x0/LR1110.h b/src/modules/LR11x0/LR1110.h
index daf54b6f..60040ed0 100644
--- a/src/modules/LR11x0/LR1110.h
+++ b/src/modules/LR11x0/LR1110.h
@@ -18,7 +18,7 @@ class LR1110: public LR11x0 {
       \brief Default constructor.
       \param mod Instance of Module that will be used to communicate with the radio.
     */
-    LR1110(Module* mod);
+    LR1110(Module* mod); // cppcheck-suppress noExplicitConstructor
 
     // basic methods
 
@@ -74,7 +74,7 @@ class LR1110: public LR11x0 {
       \param freq Carrier frequency to be set in MHz.
       \returns \ref status_codes
     */
-    int16_t setFrequency(float freq);
+    int16_t setFrequency(float freq) override;
 
     /*!
       \brief Sets carrier frequency. Allowed values are in range from 150.0 to 960.0 MHz.
diff --git a/src/modules/LR11x0/LR1120.h b/src/modules/LR11x0/LR1120.h
index c7360c7a..62045b02 100644
--- a/src/modules/LR11x0/LR1120.h
+++ b/src/modules/LR11x0/LR1120.h
@@ -18,7 +18,7 @@ class LR1120: public LR11x0 {
       \brief Default constructor.
       \param mod Instance of Module that will be used to communicate with the radio.
     */
-    LR1120(Module* mod);
+    LR1120(Module* mod); // cppcheck-suppress noExplicitConstructor
 
     // basic methods
 
@@ -74,7 +74,7 @@ class LR1120: public LR11x0 {
       \param freq Carrier frequency to be set in MHz.
       \returns \ref status_codes
     */
-    int16_t setFrequency(float freq);
+    int16_t setFrequency(float freq) override;
 
     /*!
       \brief Sets carrier frequency. Allowed values are in range from 150.0 to 960.0 MHz,
diff --git a/src/modules/LR11x0/LR1121.h b/src/modules/LR11x0/LR1121.h
index 183e023a..2dc0242b 100644
--- a/src/modules/LR11x0/LR1121.h
+++ b/src/modules/LR11x0/LR1121.h
@@ -19,7 +19,7 @@ class LR1121: public LR1120 {
       \brief Default constructor.
       \param mod Instance of Module that will be used to communicate with the radio.
     */
-    LR1121(Module* mod);
+    LR1121(Module* mod); // cppcheck-suppress noExplicitConstructor
 
     // TODO this is where overrides to disable GNSS+WiFi scanning methods on LR1121
     // will be put once those are implemented
diff --git a/src/modules/LR11x0/LR11x0.cpp b/src/modules/LR11x0/LR11x0.cpp
index 8ad2ccd5..16f0726a 100644
--- a/src/modules/LR11x0/LR11x0.cpp
+++ b/src/modules/LR11x0/LR11x0.cpp
@@ -143,6 +143,7 @@ int16_t LR11x0::transmit(uint8_t* data, size_t len, uint8_t addr) {
   // get currently active modem
   uint8_t modem = RADIOLIB_LR11X0_PACKET_TYPE_NONE;
   state = getPacketType(&modem);
+  RADIOLIB_ASSERT(state);
   RadioLibTime_t timeout = getTimeOnAir(len);
   if(modem == RADIOLIB_LR11X0_PACKET_TYPE_LORA) {
     // calculate timeout (150% of expected time-on-air)
@@ -189,6 +190,7 @@ int16_t LR11x0::receive(uint8_t* data, size_t len) {
   // get currently active modem
   uint8_t modem = RADIOLIB_LR11X0_PACKET_TYPE_NONE;
   state = getPacketType(&modem);
+  RADIOLIB_ASSERT(state);
   if(modem == RADIOLIB_LR11X0_PACKET_TYPE_LORA) {
     // calculate timeout (100 LoRa symbols, the default for SX127x series)
     float symbolLength = (float)(uint32_t(1) << this->spreadingFactor) / (float)this->bandwidthKhz;
@@ -396,6 +398,7 @@ int16_t LR11x0::startTransmit(uint8_t* data, size_t len, uint8_t addr) {
     // in LR-FHSS mode, the packet is built by the device
     // TODO add configurable grid step and device offset
     state = lrFhssBuildFrame(this->lrFhssHdrCount, this->lrFhssCr, RADIOLIB_LR11X0_LR_FHSS_GRID_STEP_FCC, true, this->lrFhssBw, this->lrFhssHopSeq, 0, data, len);
+    RADIOLIB_ASSERT(state);
 
   } else {
     // write packet to buffer
@@ -1202,12 +1205,12 @@ float LR11x0::getRSSI() {
 
   // check active modem
   uint8_t type = RADIOLIB_LR11X0_PACKET_TYPE_NONE;
-  getPacketType(&type);
+  (void)getPacketType(&type);
   if(type == RADIOLIB_LR11X0_PACKET_TYPE_LORA) {
-    getPacketStatusLoRa(&val, NULL, NULL);
+    (void)getPacketStatusLoRa(&val, NULL, NULL);
 
   } else if(type == RADIOLIB_LR11X0_PACKET_TYPE_GFSK) {
-    getPacketStatusGFSK(NULL, &val, NULL, NULL);
+    (void)getPacketStatusGFSK(NULL, &val, NULL, NULL);
   
   }
 
@@ -1219,9 +1222,9 @@ float LR11x0::getSNR() {
 
   // check active modem
   uint8_t type = RADIOLIB_LR11X0_PACKET_TYPE_NONE;
-  getPacketType(&type);
+  (void)getPacketType(&type);
   if(type == RADIOLIB_LR11X0_PACKET_TYPE_LORA) {
-    getPacketStatusLoRa(NULL, &val, NULL);
+    (void)getPacketStatusLoRa(NULL, &val, NULL);
   }
 
   return(val);
@@ -1254,7 +1257,7 @@ size_t LR11x0::getPacketLength(bool update, uint8_t* offset) {
 RadioLibTime_t LR11x0::getTimeOnAir(size_t len) {
   // check active modem
   uint8_t type = RADIOLIB_LR11X0_PACKET_TYPE_NONE;
-  getPacketType(&type);
+  (void)getPacketType(&type);
   if(type == RADIOLIB_LR11X0_PACKET_TYPE_LORA) {
     // calculate number of symbols
     float N_symbol = 0;
@@ -1468,7 +1471,7 @@ int16_t LR11x0::getWifiScanResult(LR11x0WifiResult_t* result, uint8_t index, boo
 
   if(!brief) {
     if(this->wifiScanMode == RADIOLIB_LR11X0_WIFI_ACQ_MODE_FULL_BEACON) {
-      LR11x0WifiResultExtended_t* resultExtended = (LR11x0WifiResultExtended_t*)result;
+      LR11x0WifiResultExtended_t* resultExtended = reinterpret_cast<LR11x0WifiResultExtended_t*>(result);
       resultExtended->rate = raw[3];
       resultExtended->service = (((uint16_t)raw[4] << 8) | ((uint16_t)raw[5]));
       resultExtended->length = (((uint16_t)raw[6] << 8) | ((uint16_t)raw[7]));
@@ -1495,7 +1498,7 @@ int16_t LR11x0::getWifiScanResult(LR11x0WifiResult_t* result, uint8_t index, boo
       return(RADIOLIB_ERR_NONE);
     }
 
-    LR11x0WifiResultFull_t* resultFull = (LR11x0WifiResultFull_t*)result;
+    LR11x0WifiResultFull_t* resultFull = reinterpret_cast<LR11x0WifiResultFull_t*>(result);
     resultFull->frameType = raw[3] & 0x03;
     resultFull->frameSubType = (raw[3] & 0x3C) >> 2;
     resultFull->toDistributionSystem = (raw[3] & 0x40) != 0;
@@ -1533,7 +1536,7 @@ int16_t LR11x0::wifiScan(uint8_t wifiType, uint8_t* count, uint8_t mode, uint16_
       return(RADIOLIB_ERR_RX_TIMEOUT);
     }
   }
-  RADIOLIB_DEBUG_BASIC_PRINTLN("WiFi scan done in %d ms", this->mod->hal->millis() - start);
+  RADIOLIB_DEBUG_BASIC_PRINTLN("WiFi scan done in %lu ms", (long unsigned int)(this->mod->hal->millis() - start));
 
   // read number of results
   return(getWifiScanResultsCount(count));
@@ -1658,7 +1661,7 @@ int16_t LR11x0::config(uint8_t modem) {
   RADIOLIB_ASSERT(state);
 
   // calibrate all blocks
-  state = this->calibrate(RADIOLIB_LR11X0_CALIBRATE_ALL);
+  (void)this->calibrate(RADIOLIB_LR11X0_CALIBRATE_ALL);
 
   // wait for calibration completion
   this->mod->hal->delay(5);
@@ -1716,7 +1719,7 @@ int16_t LR11x0::startCad(uint8_t symbolNum, uint8_t detPeak, uint8_t detMin) {
     num = 2;
   }
   
-  uint8_t detPeakValues[8] = { 48, 48, 50, 55, 55, 59, 61, 65 };
+  const uint8_t detPeakValues[8] = { 48, 48, 50, 55, 55, 59, 61, 65 };
   uint8_t peak = detPeak;
   if(peak == RADIOLIB_LR11X0_CAD_PARAM_DEFAULT) {
     peak = detPeakValues[this->spreadingFactor - 5];
diff --git a/src/modules/LR11x0/LR11x0.h b/src/modules/LR11x0/LR11x0.h
index 216aa68e..0fdabec0 100644
--- a/src/modules/LR11x0/LR11x0.h
+++ b/src/modules/LR11x0/LR11x0.h
@@ -656,7 +656,7 @@ class LR11x0: public PhysicalLayer {
       \brief Default constructor.
       \param mod Instance of Module that will be used to communicate with the radio.
     */
-    LR11x0(Module* mod);
+    LR11x0(Module* mod); // cppcheck-suppress noExplicitConstructor
 
     /*!
       \brief Whether the module has an XTAL (true) or TCXO (false). Defaults to false.
@@ -793,23 +793,23 @@ class LR11x0: public PhysicalLayer {
       \brief Sets interrupt service routine to call when a packet is received.
       \param func ISR to call.
     */
-    void setPacketReceivedAction(void (*func)(void));
+    void setPacketReceivedAction(void (*func)(void)) override;
 
     /*!
       \brief Clears interrupt service routine to call when a packet is received.
     */
-    void clearPacketReceivedAction();
+    void clearPacketReceivedAction() override;
 
     /*!
       \brief Sets interrupt service routine to call when a packet is sent.
       \param func ISR to call.
     */
-    void setPacketSentAction(void (*func)(void));
+    void setPacketSentAction(void (*func)(void)) override;
 
     /*!
       \brief Clears interrupt service routine to call when a packet is sent.
     */
-    void clearPacketSentAction();
+    void clearPacketSentAction() override;
 
     /*!
       \brief Interrupt-driven binary transmit method.
@@ -833,7 +833,7 @@ class LR11x0: public PhysicalLayer {
 
       \returns \ref status_codes
     */
-    int16_t startReceive();
+    int16_t startReceive() override;
 
     /*!
       \brief Interrupt-driven receive method. IRQ1 will be activated when full packet is received.
@@ -895,7 +895,7 @@ class LR11x0: public PhysicalLayer {
       \param power Output power to be set in dBm, output PA is determined automatically preferring the low-power PA.
       \returns \ref status_codes
     */
-    int16_t setOutputPower(int8_t power);
+    int16_t setOutputPower(int8_t power) override;
 
     /*!
       \brief Sets output power. Allowed values are in range from -9 to 22 dBm (high-power PA) or -17 to 14 dBm (low-power PA).
@@ -961,7 +961,7 @@ class LR11x0: public PhysicalLayer {
       \param br FSK bit rate to be set in kbps.
       \returns \ref status_codes
     */
-    int16_t setBitRate(float br);
+    int16_t setBitRate(float br) override;
 
     /*!
       \brief Sets GFSK frequency deviation. Allowed values range from 0.0 to 200.0 kHz.
@@ -1107,13 +1107,13 @@ class LR11x0: public PhysicalLayer {
       \brief Gets RSSI (Recorded Signal Strength Indicator) of the last received packet. Only available for LoRa or GFSK modem.
       \returns RSSI of the last received packet in dBm.
     */
-    float getRSSI();
+    float getRSSI() override;
 
     /*!
       \brief Gets SNR (Signal to Noise Ratio) of the last received packet. Only available for LoRa modem.
       \returns SNR of the last received packet in dB.
     */
-    float getSNR();
+    float getSNR() override;
 
     /*!
       \brief Gets frequency error of the latest received packet.
@@ -1167,7 +1167,7 @@ class LR11x0: public PhysicalLayer {
       \brief Get one truly random byte from RSSI noise.
       \returns TRNG byte.
     */
-    uint8_t randomByte();
+    uint8_t randomByte() override;
 
     /*!
       \brief Set implicit header mode for future reception/transmission.
@@ -1264,7 +1264,7 @@ class LR11x0: public PhysicalLayer {
 #if !RADIOLIB_GODMODE && !RADIOLIB_LOW_LEVEL
   protected:
 #endif
-    Module* getMod();
+    Module* getMod() override;
 
     // LR11x0 SPI command implementations
     int16_t writeRegMem32(uint32_t addr, uint32_t* data, size_t len);
@@ -1410,7 +1410,7 @@ class LR11x0: public PhysicalLayer {
 #if !RADIOLIB_GODMODE
   protected:
 #endif
-    uint8_t chipType;
+    uint8_t chipType = 0;
 
 #if !RADIOLIB_GODMODE
   private: